|
|||||
|
|
Removal of sulfur at high temperatures using iron-based sorbents supported on fine coal ash |
|
| Authors: | Wei Xie Liping Chang Kechang Xie Jianglong Yu |
| Affiliation: | a Faculty of Energy and Power Engineering, Shenyang Institute of Aeronautical Engineering, Daoyi, Shenyang 110136, PR China b Key Laboratory of Coal Science and Technology, Taiyuan University of Technology, Ministry of Education and Shanxi Province, Taiyuan, Shanxi 030024, PR China c School of Chemical Engineering, University of Science and Technology Liaoning, Anshan, Liaoning 114051, China d Department of Chemical Engineering, University of Newcastle, NSW 2308, Australia |
| Abstract: | This paper deals with the simultaneous removal of H2S and COS in the temperature range of 400-650 °C at 1 bar by using iron-based sorbents. The iron-based sorbents were prepared using iron oxide and cerium oxide with coal fine ash as the support. Simulated coal gas was used in the sulfidation experiments and 5% O2 in N2 gas was used for regeneration of sorbents. Both sulfidation and regeneration experiments have been carried out using a fixed-bed quartz reactor. The product gases were analyzed using a GC equipped with a TCD and a FPD. The results demonstrated that both H2S and COS can be effectively reduced using the iron-based sorbents supported on fine coal ash. XRD analysis shows that Fe1−xS phase has formed during sulfidation indicating a high sulfur capacity of the sorbent. The mechanism of the removal of COS simultaneously with H2S is also discussed. |
| Keywords: | Hot coal gas desulfurization Hydrogen sulfide COS Iron-based sorbents Sorbent support |
| 本文献已被 ScienceDirect 等数据库收录！ | |
